Vishay Semiconductor Diodes Division
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SMB8J40CA-M3/5B
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SMB8J40CA-M3/5B

Product Overview

The SMB8J40CA-M3/5B belongs to the category of transient voltage suppressor diodes. These diodes are commonly used to protect sensitive electronic components from voltage spikes and transients. The SMB8J40CA-M3/5B is characterized by its high surge capability, low clamping voltage, and fast response time. It is typically available in a compact package and is designed to be used in various electronic circuits where protection against voltage surges is required.

Basic Information

  • Category: Transient Voltage Suppressor Diode
  • Use: Protection against voltage spikes and transients
  • Characteristics: High surge capability, low clamping voltage, fast response time
  • Package: SMB (DO-214AA)
  • Essence: Protecting sensitive electronic components
  • Packaging/Quantity: Typically available in reels or bulk packaging

Specifications

  • Part Number: SMB8J40CA-M3/5B
  • Peak Pulse Power: 800W
  • Breakdown Voltage: 40V
  • Operating Temperature Range: -55°C to +150°C
  • RoHS Compliant: Yes

Detailed Pin Configuration

The SMB8J40CA-M3/5B follows the standard pin configuration for SMB diodes, with two leads for connection to the circuit.

Functional Features

  • Transient Voltage Suppression: Provides effective protection against voltage spikes and transients.
  • Fast Response Time: Rapidly clamps transient voltages to safe levels, protecting downstream components.

Advantages and Disadvantages

Advantages

  • High surge capability
  • Low clamping voltage
  • Fast response time

Disadvantages

  • Sensitive to reverse over-voltage conditions
  • Limited power dissipation capability

Working Principles

The SMB8J40CA-M3/5B operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage across it exceeds the breakdown voltage. This effectively diverts the excess energy away from the protected circuit, preventing damage to sensitive components.

Detailed Application Field Plans

The SMB8J40CA-M3/5B is widely used in various applications including: - Power supplies - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  • SMBJ40CA: Similar specifications and package type
  • P6SMB40CA: Higher power handling capability
  • SMAJ40CA: Smaller package size

In conclusion, the SMB8J40CA-M3/5B transient voltage suppressor diode offers reliable protection against voltage surges and transients in a wide range of electronic applications. Its high surge capability, low clamping voltage, and fast response time make it a valuable component for ensuring the reliability and longevity of electronic circuits.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SMB8J40CA-M3/5B v technických řešeních

  1. What is the SMB8J40CA-M3/5B?

    • The SMB8J40CA-M3/5B is a TVS (transient voltage suppressor) diode designed to protect sensitive electronic components from voltage spikes and transients.

  2. What are the key features of the SMB8J40CA-M3/5B?

    • The SMB8J40CA-M3/5B features a peak power dissipation of 800W, low clamping voltage, and fast response time, making it suitable for surge protection in various applications.

  3. In what applications can the SMB8J40CA-M3/5B be used?

    • The SMB8J40CA-M3/5B is commonly used in applications such as power supplies, automotive electronics, industrial equipment, and telecommunications systems to protect against transient overvoltage events.

  4. How does the SMB8J40CA-M3/5B provide protection?

    • The SMB8J40CA-M3/5B diverts excessive current away from sensitive components by clamping the voltage during transient events, thereby safeguarding the circuitry from damage.

  5. What are the environmental specifications of the SMB8J40CA-M3/5B?

    • The SMB8J40CA-M3/5B is designed to meet industry standards for temperature range, humidity, and reliability, ensuring its performance in diverse environmental conditions.

  6. Can the SMB8J40CA-M3/5B be used in high-speed data lines?

    • Yes, the SMB8J40CA-M3/5B is suitable for protecting high-speed data lines, including Ethernet, USB, and HDMI interfaces, from voltage surges and ESD (electrostatic discharge).

  7. What are the mounting options for the SMB8J40CA-M3/5B?

    • The SMB8J40CA-M3/5B is available in surface mount (SMD) packages, offering convenient integration onto PCBs and compatibility with automated assembly processes.

  8. Does the SMB8J40CA-M3/5B comply with industry standards?

    • Yes, the SMB8J40CA-M3/5B complies with relevant industry standards such as AEC-Q101 for automotive applications and is RoHS compliant for environmental considerations.

  9. What are the recommended layout and placement guidelines for the SMB8J40CA-M3/5B?

    • It is recommended to place the SMB8J40CA-M3/5B as close as possible to the protected circuitry and follow the manufacturer's guidelines for PCB layout to optimize its protective function.

  10. Are there any application notes or design resources available for using the SMB8J40CA-M3/5B?

    • Yes, the manufacturer provides application notes, datasheets, and design resources to assist engineers in effectively integrating the SMB8J40CA-M3/5B into their technical solutions.